examples/dataflow-custom-templates/java/src/main/java/com/google/example/DisplayCounts.java
<gh_stars>0/*
 * Copyright 2022 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     https://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

package com.google.example;

import org.apache.beam.sdk.transforms.SimpleFunction;
import org.apache.beam.sdk.values.KV;

/** Formats key/value a pair of a word and its count for easy display. */
class DisplayCounts extends SimpleFunction<KV<String, Long>, String> {

  @Override
  public String apply(KV<String, Long> input) {
    return String.format("%s: %d", input.getKey(), input.getValue());
  }
}
